1-16 Technical Information
Modem Board
The 33.6 kilobytes per second (Kbps) data/fax/voice modem board attaches to the front of
the CPU board via connector P10. The internal modem transmits data at a rate of 33,600
bits-per-second, (14.4 Kbps for fax use) integrating built-in error control.
The modem provides one standard phone connector, and one cellular phone connector for
transforming the notebook into a speakerphone. NEC provides two analog phone cables
(one is a spare) for convenience.
The built-in modem is also cellular-capable. To use the computer’s cellular phone connec-
tor, the user needs to purchase a cellular phone cable from a computer or electronics store.
Supported cellular phones include:
NEC P100 Series
NEC P700 Series
Motorola MicroTAC
AT&T 3610.
CMOS Battery
The lithium battery (3.0 Volts, 280 mAh capacity) is attached to P13 on the CPU board. It
provides battery backup and prevents data loss in the system’s complementary metal oxide
semiconductor (CMOS) RAM. This memory area contains information on the system’s
configuration like date, time, drives, and memory. The CMOS battery lasts approximately
two years.
Bridge Battery
The bridge battery saves the memory contents and system status for up to 5 minutes while
in Suspend mode. It is connected to the CPU board via connector P15. The AC adapter
maintains voltage in the bridge battery when the system is powered on or off. The bridge
battery stores 6 Volts, 60 mAH.
SYSTEM MEMORY
The system board provides 16-MB of standard random access memory (RAM).
Optional memory boards with a value of 8-, 16-, 32 or 64-MB can be added to increase
system memory up to a maximum of 80-MB (70 ns Fast Page access). In addition, 256-KB
of read-only memory (ROM), 1 x 28F020, enables the system BIOS to be flashed.
The system provides 2-MB of video RAM (50 ns HyperPage mode, self-refresh).
